#ifndef _MATH_H
#define _MATH_H
double exp(double* x);
double sqrt(double* x);
double fabs(double* x);
double sin(double* x);
double sine(double* x);
double cos(double* x);
double ln(double* x);
double power(double* x,double* y);
double pow_i(double num,int n);
#endif
